Bread-mixer.



W. A. BABBITT.

BREAD MIXER. v APPLICATION FILED APB..9, 1909.

W. A. BABBITT.

BREAD MIXER.

APLIOATION FILED APR. 9, 1909. 959,101. mentari May 24, 1910.

2 SHEETS-SHEET 2.

a. .W mW mwl WILLIAM A. BABBITT, OF LOCKPORT, NEW YORK.

BREAD-MIXER.

Specification of Letters Patent.

Application led April 9, 1909.

Patented May 24, 1910.

serial No. 488,881.

To all whom it may concern:

Be it known that I, WILLIAM A. BABBITT, a citizen of the United States, residing at Lockport, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Bread- Mixers, of which the following is a specification.

This invention relates to mixing machines, and more particularly to a machine for nlixing and kneading dough, pastry and the The object of the invention is to provide a comparatively simple and thoroughly efcient device of the character described, by means of which the several ingredients may be intimately mixed or blended, and the resultant dough thoroughly kneaded at one operation of the machine.

A further object is to provide a combined mixing and kneading device, including a receptacle having a kneading frame pivotally mounted for oscillation within the same and provided with a plurality of feathering blades which permit the passage of the material through said frame during the mixing operation and form a support for the mass of dough when kneading the latter.

A further object is to so arrange the pivoted blades with relation to the oscillating.

frame that when said frame is used for kneading the dough or materials to be mixed, the edges of the blade will press into the mass and thus act as lingers to assist in kneading the former.

A further object is to provide one end of the containing receptacle with a curved kneading surface thereby to impart a rolling motion to the dough, when the kneading frame is actuated.

A still further object of the invention is to generally improve this class of devices, so as to increase their utility, durability and efiiciency, as well as to reduce the cost of manufacture.

Further objects and advantages will appear in the following description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims.

For a full understanding of the invention and the merits thereof, and to acquire a knowledge of the details of construction,

reference is to be had to the following description and accompanying drawing, in which:

Figure l is a perspective view of a combined mixing and kneading machine constructed in accordance with my invention; Fig. 2 is a transverse vertical sectional view of the same; Fig. 3 is a longitudinal vertical sectional view; Fig. Ll is a similar view, the kneading frame or yoke being shown in full lines in normal position and in dotted lines in the position to effect the kneading of the dough; Fig. 5 is a longitudinal vertical sectional view showing the manner of discharging the dough from the interior of the receptacle; Fig. 6 is a bottom plan view of one end of the cover detached; and, Fig. 7 is a detail perspective view of one of the pivotal mixing blades detached; Fig. 8 is a detail side elevation of the lower portion of the kneading frame.

Corresponding and like parts are referred to in the following description and indi* cated in all'the views of the drawing, by the same reference characters.

The improved mixing machine forming the subject-matter of the present invention, includes a supporting base 5, preferably formed of metal, and having its opposite longitudinal edges reinforced and strengthened by the provision of vertical iianges 6.

Supported on the base 5 is a substantially semi-circular receptacle 7 adapted to receive the dough or other materials to be mixed and having its forward end curved rearwardly over the top of the receptacle, to produce a kneading surface 8, which latter serves to impart a rolling motion to the mass of dough, as will be more fully explained hereinafter.

The inner walls of the receptacle are reinforced and strengthened by bearing plates 9 having perforations formed therein for the reception of a transverse shaft l0 on which is mounted for oscillation a kneading frame l1.

The kneading frame 1l is preferably in the form of a yoke, the closed end of which is provided with an operating handle 12, while the open end thereof extends within the receptacle 7 and is spaced a sufficient distance from the bottom of said receptacle to permit free oscillation of the frame within the same.

The vertical arms of the kneading frame are Vpierced by a plurality of spaced transverse openings 13 whichreceive laterally projecting lugs 14 on the feathering-mixing gitudinal edges ofthe yoke 11 and serve to limit the rearward pivotal movement of said blades. limiting the swinging movement of the blades may beformed on the yoke instead of on the blades, without departing from the spirit of the invention.

Attention is here called to the fact lthat the mixing blades 15 are disposed at an an gle or inclination to the longitudinal plane of the oscillating frame 11, thereby to present projecting edges to the mass of dough in the receiving compartment, which edges press into the dough and assist in squeezing and kneading thelatter. Y

The openings for the bearing lugs of the lower mixing blade 15 are slightly elongated, as best shown in Fig. 8 of the drawing, so as to permit free movement of the said blade, and thus allow the latter to conn form to the bottom of the receptacle and prevent any dough or other material from adhering to the bottom of said receptacle during the operation of kneading.

The upper edges yof the receptacle 7 at the front end thereof, are deflected downwardly in the direction of the base 5, to form a dis- Y charge mouth 17, the lower edge of which is preferably disposed in alinement with the transverse edge of the base 5,so that when the kneading frame is removed and the receptacle positioned on end, the transverse edge of vthe support and the mouth of the receptacle together will sustain the weightof said receptacle and thus lpermit the ready discharge of the dough from the receiving compartment into a bread pan or other receptacle designed to receive the same.

Combined with the receptacle 7, is a cover 18 having a suitable handle 19 and provided with a downwardly deflected portion 20 which forms a closure for the mouth of the receptacle. The opposite longitudinal edges of the cover 18 are spaced laterally from the interior walls of the receptacle to Vform guiding recesses 21 for the opposite arms ofthe kneading frame 11, so that the latter may be rreadily oscillated to eect the mixing and kneading of the dough, without the necessity of removing the cover.

In using the device, the ingredients or materials of which the bread is to be formed, are placed in the receiving compartment of the receptacle 7, and the frame 11 rapidly oscillated by manipulatingthe handle 12. As the frame oscillates, the material will pass between the feathering blades, thereby to thoroughly mix or blend the ingredients and work the same to the consistency Vof If desired, however, the means for dle of the kneading frame is tilted rearwardly so as to force the dough upwardly in contact with the curved kneading surface 8, the curvature of the portion 8 being such as to impart a rolling motion to the dough. Asthe mass of dough is carried upwardly on the pivoted vblades 15, the projecting edges of said blades will press into the dough and thus simulate the lingers of the human hand, as in making bread manually.

Attention is 'here called to the fact Athat during the mixing operation, the pivoted blades are free to swing laterally on the lugs or trunnions 1-1 to permit the passage of the materials between the same, Vand 'that when the materials have Vassumed the consistency of dough, the stop lugs 16 by engagement with the adjacent edges of the frame 11 will prevent tilting movement of the blades, and thus form a support for the dough so that the latter may be carried upwardly in engagement with the kneadi-ng surface 8 4when the frame 11 is tilted. It will also be noted that after the dough is carried upwardly on the blades 15 and rthe frame moves to the norma-l or vertical position within the reccptacle, the mass of ldough will drop by gravity onto the projecting edges of said blades, thereby to thoroughly knead the dough.

The term overlapping, as applied to the mixing blades 15, Lis intended `to *comprehend any arrangement of blades in which the lower edge of one blade extends over the upper edge of an adjacent blade a sufiieientvdistance to Aform in effect a supporting platform for the dough when the swinging frame is oscillated in the act of -kneading said dough.

When the device is used for mixingfcake, the upper two blades 15 will be dispensed with, the mixing ofthe -rbatter beingeifected by rapidly oscillating the frame within the receptacle, as will be readily understood.

Any fsuitable means may be employed for retaining the mixing yblades 15 in the yoke 11, but it is preferred to make the yoke of spring metal so that the arms of said yoke will be slightly resilient and thus exert a yieldable pressure on the blades and retain the same Vin position on the frame, Without the employment of Vscrews and similar fastening devices.

1t is obvious that the reciprocating v'movement of the kneading frame may be supplied from an eccentric instead of from a radial motion on a central shaft. Y

lhile the device is principally designed for mixing and -kneading dough and similar materials, it must of course be understood that the same may be rused with 'equally good results for churning butterV or for other purposes, without departing from the spirit of the invention.

Having thus described the invention, what is claimed as new is 1. A 'mixer including a receptacle, a lrneading frame pivotally mounted for oscillation within the receptacle, a plurality of overlapping mixing blades eccentrically mounted for pivotal movement on the lneading frame, and means for limiting the pivotal movement of the blades in one direction.

2. A mixer including a receptacle, a frame pivotally mounted for oscillation within the receptacle, mixing blades pivotally mounted between the walls of the frame and free to swing in one direction only, and means for limiting the swinging movement of the blades in the opposite direction.

3. A mixer including a receptacle, a lineading frame pivotally mounted within the receptacle and provided with resilient side bars having perforations formed therein, blades pivotally mounted between the resilient walls of the frame and provided with trunnions arranged to enter the adjacent perforations in said frame, said blades being free to swing in one direction, and means for limiting the swinging movement of the blades in the opposite direction.

et. A mixer including a receptacle, a shaft extending transversely through the receptacle, a frame mounted for oscillation on the shaft and having spaced perforations formed therein constituting bearings, a plurality of mixing blades pivotally mounted between the walls of the frame and provided with oppositely disposed trunnions engaging the adjacent bearings, and lugs extending longitudinally from the opposite ends of the blades for limiting the swinging movement thereof.

5. A mixer including a receptacle, a frame mounted for oscillation within the receptacle, and a plurality of feathering mixing blades pivotally mounted between the walls of the frame and disposed in overlapped relation.

6. A mixer including a receptacle, a frame mounted for oscillation within the receptacle, and a plurality of flat overlapping blades pivotally mounted between the walls of the frame and disposed at an angle to the longitudinal plane of said frame, thereby to present projecting edges to the materials being operated upon.

7. A mixing machine including a receptacle having one end thereof curved upwardly and rearwardly to form a kneading surface, a kneading frame mounted within the receptacle, and a plurality of overlapping blades eccentrically mounted for pivotal movement between the walls of the frame and disposed at an angle to the longitudinal plane of said frame for forcing the material against the kneading surface.

8. A mixing machine including a receptacle having an opening and provided with an upwardly and rearwardly curved wall forming a partial closure for said opening, one end of the receptacle being cut away to form a discharge mouth, a cover provided with a downwardly deflected portion forming a closure for the mouth of the receptacle, and a frame pivotally mounted for oscillation within the receptacle and provided with a plurality of mixing blades, the side walls of the cover being. spaced from the interior walls of the receptacle to form guiding recesses for the reception of the oscillating frame.

9. A mixing machine including a supporting base, a receptacle secured to the base and having one end thereof curved upwardly and rearwardly to form a kneading surface, and its other end provided with a discharge mouth, a frame mounted for oscillation within the receptacle and provided with a plurality of mixing blades, a cover provided with a deiiected portion forming a closure for the mouth of the receptacle and having its side walls spaced from the receptacle to form guides for the oscillating frame, the mouth of the receptacle and one end of the base being disposed in substantially vertical alinement with each other.

10. A mixer including a receptacle, a frame mountedl for oscillation within the receptacle and having vertically disposed slots formed therein and constituting bearings, and a featherinfr mixing blade pivotally mounted in sait slots and having a limited vertical movement.

11. A mixer including a receptacle, a frame mounted for oscillation within the receptacle, and a series of feathering mixing blades pivotally mounted in the frame, the lowest blade in the series having a limited vertical movement.

12. A mixer including a receptacle, a frame mounted for oscillation within the receptacle and provided with transversely alined vertically disposed slots constituting bearings, a pivoted mixing blade provided with trunnions journaled in the slots and having a limited vertical movement and means for limiting the pivotal movement of the blade in one direction.

In testimony whereof I aliix my signature in presence of two witnesses.

WILLIAM A. BABBITT. [1.. s]

Witnesses:

WM. S. CA'roN, MARY G. WHITE. 

